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首先声明，这些内容都是借鉴来的，稍微改动了一下。
主要就是三个应用类ColumnGroup， GroupableTableHeader，GroupableTableHeaderU
和一个示例类GroupableHeaderExample
1、ColumnGroup类主要负责多表头的构建
import java.awt.Component;
import java.awt.Dimension;
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
public class ColumnGroup {
protected TableCellRenderer renderer;
protected Vector v;
protected String text;
protected int margin = 0;
public ColumnGroup(String text) {
this(null, text);
}
public ColumnGroup(TableCellRenderer renderer, String text) {
if (renderer == null) {
this.renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
setHorizontalAlignment(JLabel.CENTER);
this.setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
};
} else {
this.renderer = renderer;
}
this.text = text;
v = new Vector();
}
/**
* @param obj
* TableColumn or ColumnGroup
*/
public void add(Object obj) {
if (obj == null) {
return;
}
v.addElement(obj);
}
/**
* @param c
* TableColumn
* @param v
* ColumnGroups
*/
public Vector getColumnGroups(TableColumn c, Vector g) {
g.addElement(this);
if (v.contains(c))
return g;
Enumeration enumeration = v.elements();
while (enumeration.hasMoreElements()) {
Object obj = enumeration.nextElement();
if (obj instanceof ColumnGroup) {
Vector groups = (Vector) ((ColumnGroup) obj).getColumnGroups(c,
(Vector) g.clone());
if (groups != null)
return groups;
}
}
return null;
}
public TableCellRenderer getHeaderRenderer() {
return renderer;
}
public Object getHeaderValue() {
return text;
}
public int getSize() {
return v == null ? 0 : v.size();
}
public Dimension getSize(JTable table) {
Component comp = renderer.getTableCellRendererComponent(table,
getHeaderValue(), false, false, -1, -1);
int height = comp.getPreferredSize().height;
int width = 0;
Enumeration enumeration = v.elements();
while (enumeration.hasMoreElements()) {
Object obj = enumeration.nextElement();
if (obj instanceof TableColumn) {
TableColumn aColumn = (TableColumn) obj;
width += aColumn.getWidth();
width += margin;
} else {
width += ((ColumnGroup) obj).getSize(table).width;
}
}
return new Dimension(width, height);
}
/**
*
* 创建日期:(2003-7-14 10:53:26)
*
* @return java.lang.String
*/
public java.lang.String getText() {
return text;
}
/**
* 列表头中删除Column 创建日期:(2002-9-25 15:49:00)
*/
public boolean removeColumn(ColumnGroup ptg, TableColumn tc) {
boolean retFlag = false;
if (tc != null) {
for (int i = 0; i < ptg.v.size(); i++) {
Object tmpObj = ptg.v.get(i);
if (tmpObj instanceof ColumnGroup) {
retFlag = removeColumn((ColumnGroup) tmpObj, tc);
// 如果找到返回
if (retFlag)
break;
} else if (tmpObj instanceof TableColumn) {
// 判断是否查找的对象
if (tmpObj == tc) {
ptg.v.remove(i);
retFlag = true;
break;
}
}
}
}
return retFlag;
}
/**
* 列表头中删除ColumnGrp 删除返回true,否则返回false; 创建日期:(2002-9-25 15:49:00)
*/
public boolean removeColumnGrp(ColumnGroup ptg, ColumnGroup tg) {
boolean retFlag = false;
if (tg != null) {
for (int i = 0; i < ptg.v.size(); i++) {
Object tmpObj = ptg.v.get(i);
if (tmpObj instanceof ColumnGroup) {
// 判断是否查找的对象
if (tmpObj == tg) {
ptg.v.remove(i);
retFlag = true;
break;
} else {
retFlag = removeColumnGrp((ColumnGroup) tmpObj, tg);
// 如果找到返回
if (retFlag)
break;
}
} else if (tmpObj instanceof TableColumn) {
break;
}
}
}
return retFlag;
}
public void setColumnMargin(int margin) {
this.margin = margin;
Enumeration enumeration = v.elements();
while (enumeration.hasMoreElements()) {
Object obj = enumeration.nextElement();
if (obj instanceof ColumnGroup) {
((ColumnGroup) obj).setColumnMargin(margin);
}
}
}
public void setHeaderRenderer(TableCellRenderer renderer) {
if (renderer != null) {
this.renderer = renderer;
}
}
/**
*
* 创建日期:(2003-7-14 10:53:26)
*
* @param newText
* java.lang.String
*/
public void setText(java.lang.String newText) {
text = newText;
}
}
2、GroupableHeader继承自JTableHeader，为多表头结构的管理者
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
/**
* GroupableTableHeader
* @author flyx
*/
public class GroupableTableHeader extends JTableHeader {
private static final String uiClassID = "GroupableTableHeaderUI";
protected Vector columnGroups = null;
public GroupableTableHeader(TableColumnModel model) {
super(model);
setUI(new GroupableTableHeaderUI());
setReorderingAllowed(false);
setRequestFocusEnabled(false);
}
public void addColumnGroup(ColumnGroup g) {
if (columnGroups == null) {
columnGroups = new Vector();
}
columnGroups.addElement(g);
}
/**
*
* 创建日期:(2001-8-31 15:54:29)
*/
public void clearColumnGroups() {
columnGroups = null;
}
public ColumnGroup[] getColumnGroups() {
ColumnGroup[] retg=null;
if (columnGroups.size()>0) {
retg=new ColumnGroup[columnGroups.size()];
columnGroups.copyInto(retg);
}
return retg;
}
public Enumeration getColumnGroups(TableColumn col) {
if (columnGroups == null)
return null;
Enumeration enum = columnGroups.elements();
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup) enum.nextElement();
Vector v_ret = (Vector) cGroup.getColumnGroups(col, new Vector());
if (v_ret != null) {
return v_ret.elements();
}
}
return null;
}
/**
* Identifies whether or not this component can receive the focus.
* A disabled button, for example, would return false.
*
* @return true if this component can receive the focus
*/
public boolean isFocusTraversable() {
return super.isFocusTraversable() && isRequestFocusEnabled();
}
public void setColumnMargin() {
if (columnGroups == null)
return;
int columnMargin = getColumnModel().getColumnMargin();
Enumeration enum = columnGroups.elements();
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup) enum.nextElement();
cGroup.setColumnMargin(columnMargin);
}
}
public void setReorderingAllowed(boolean b) {
reorderingAllowed = b;
}
}
3、GroupableTableHeaderUI继承自BasicTableHeaderUI，是多表头的画匠
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.plaf.basic.BasicTableHeaderUI;
import javax.swing.table.*;
/**
* 多表头TableHeaderUI
*
* @author flyx
*/
public class GroupableTableHeaderUI extends BasicTableHeaderUI {
private int m_height;
private Dimension createHeaderSize(long width) {
TableColumnModel columnModel = header.getColumnModel();
width += columnModel.getColumnMargin() * columnModel.getColumnCount();
if (width > Integer.MAX_VALUE) {
width = Integer.MAX_VALUE;
}
return new Dimension((int) width, getHeaderHeight());
}
/**
* 获得该多表头下的基本列数(zjb) 递归 创建日期:(02-4-8 18:03:56)
*
* @return int
* @param cg
* nc.ui.pub.beans.table.ColumnGroup
*/
private int getColCountUnderColGroup(ColumnGroup cg, int iCount) {
Vector v = cg.v;
for (int i = 0; i < v.size(); i++) {
Object obj = v.elementAt(i);
if (obj instanceof ColumnGroup)
iCount = getColCountUnderColGroup((ColumnGroup) obj, iCount);
else
iCount++;
}
return iCount;
}
public int getHeaderHeight() {
int height = 0;
TableColumnModel columnModel = header.getColumnModel();
for (int column = 0; column < columnModel.getColumnCount(); column++) {
TableColumn aColumn = columnModel.getColumn(column);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
//
if (renderer == null) {
renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
setHorizontalAlignment(JLabel.CENTER);
setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
};
}
//
Component comp = renderer.getTableCellRendererComponent(header
.getTable(), aColumn.getHeaderValue(), false, false, -1,
column);
int cHeight = comp.getPreferredSize().height;
Enumeration enumeration = ((GroupableTableHeader) header)
.getColumnGroups(aColumn);
if (enumeration != null) {
while (enumeration.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup) enumeration
.nextElement();
cHeight += cGroup.getSize(header.getTable()).height;
}
}
height = Math.max(height, cHeight);
}
height = Math.max(height, m_height);
return height;
}
public Dimension getPreferredSize(JComponent c) {
long width = 0;
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn) enumeration.nextElement();
width = width + aColumn.getWidth();
}
return createHeaderSize(width);
}
public void paint(Graphics g, JComponent c) {
Rectangle clipBounds = g.getClipBounds();
if (header.getColumnModel() == null)
return;
((GroupableTableHeader) header).setColumnMargin();
int column = 0;
Dimension size = header.getSize();
Rectangle cellRect = new Rectangle(0, 0, size.width, size.height);
Hashtable h = new Hashtable();
int columnMargin = header.getColumnModel().getColumnMargin();
Enumeration enumeration = header.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
cellRect.height = size.height;
cellRect.y = 0;
TableColumn aColumn = (TableColumn) enumeration.nextElement();
Enumeration cGroups = ((GroupableTableHeader) header)
.getColumnGroups(aColumn);
if (cGroups != null) {
int groupHeight = 0;
while (cGroups.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup) cGroups.nextElement();
Rectangle groupRect = (Rectangle) h.get(cGroup);
if (groupRect == null) {
groupRect = new Rectangle(cellRect);
Dimension d = cGroup.getSize(header.getTable());
if (!System.getProperty("java.vm.version").startsWith(
"1.2")) {
int iColCount = getColCountUnderColGroup(cGroup, 0); // 获得该多表头下的基本列数(zjb)
// System.out.println(iColCount);
groupRect.width = d.width - iColCount
* columnMargin;
} else
groupRect.width = d.width;
groupRect.height = d.height;
h.put(cGroup, groupRect);
}
paintCell(g, groupRect, cGroup);
groupHeight += groupRect.height;
cellRect.height = size.height - groupHeight;
cellRect.y = groupHeight;
}
}
if (!System.getProperty("java.vm.version").startsWith("1.2"))
cellRect.width = aColumn.getWidth();
else
cellRect.width = aColumn.getWidth() + columnMargin;
if (cellRect.intersects(clipBounds)) {
paintCell(g, cellRect, column);
}
cellRect.x += cellRect.width;
column++;
}
}
private void paintCell(Graphics g, Rectangle cellRect, int columnIndex) {
TableColumn aColumn = header.getColumnModel().getColumn(columnIndex);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
//
if (renderer == null) {
renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
setHorizontalAlignment(JLabel.CENTER);
setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
};
}
//
// Component component =
// renderer.getTableCellRendererComponent(header.getTable(),
// aColumn.getHeaderValue(), false, false, -1, columnIndex);
//
String headerValue = aColumn.getHeaderValue().toString();
Component component = renderer.getTableCellRendererComponent(header
.getTable(), headerValue, false, false, -1, columnIndex);
rendererPane.add(component);
rendererPane.paintComponent(g, component, header, cellRect.x,
cellRect.y, cellRect.width, cellRect.height, true);
}
private void paintCell(Graphics g, Rectangle cellRect, ColumnGroup cGroup) {
TableCellRenderer renderer = cGroup.getHeaderRenderer();
//
if (renderer == null) {
renderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
setHorizontalAlignment(JLabel.CENTER);
setText((value == null) ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return this;
}
};
}
//
// Component component =
// renderer.getTableCellRendererComponent(header.getTable(),
// cGroup.getHeaderValue(), false, false, -1, -1);
//
String headerValue = cGroup.getHeaderValue().toString();
Component component = renderer.getTableCellRendererComponent(header
.getTable(), headerValue, false, false, -1, -1);
rendererPane.add(component);
rendererPane.paintComponent(g, component, header, cellRect.x,
cellRect.y, cellRect.width, cellRect.height, true);
}
public void setHeaderHeight(int iHeight) {
m_height = iHeight;
}
}
4、一个简单的测试用例 GroupableHeaderExample
import java.awt.Color;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import org.f5.ui.table.ColumnGroup;
import org.f5.ui.table.GroupableTableHeader;
/**
* @version 1.0 11/09/98
*/
public class GroupableHeaderExample extends JFrame {
GroupableHeaderExample() {
super("Groupable Header Example");
initialize();
}
private void initialize() {
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][] {
{ "119", "foo", "bar", "ja", "ko", "zh" },
{ "911", "bar", "foo", "en", "fr", "pt" } }, new Object[] {
"SNo.", "1", "2", "Native", "2", "3" });
JTable table = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
GroupableTableHeader header = (GroupableTableHeader) table
.getTableHeader();
javax.swing.table.TableColumnModel cm = table.getColumnModel();
// 接受类型
ColumnGroup g_jslx = new ColumnGroup(
"接收类型");
g_jslx.add(cm.getColumn(1));
g_jslx.add(cm.getColumn(2));
header.addColumnGroup(g_jslx);
JScrollPane scroll = new JScrollPane(table);
getContentPane().add(scroll);
setSize(400, 120);
//设置列头背景为红色
header.setBackground(Color.RED);
}
public static void main(String[] args) {
GroupableHeaderExample frame = new GroupableHeaderExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setVisible(true);
}
}
5、效果图
等我会贴图了再贴上来吧 | 